CN105467231A - To-be-tested converter grid-connected test method and to-be-tested converter grid-connected test device - Google Patents
To-be-tested converter grid-connected test method and to-be-tested converter grid-connected test device Download PDFInfo
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- CN105467231A CN105467231A CN201410419733.9A CN201410419733A CN105467231A CN 105467231 A CN105467231 A CN 105467231A CN 201410419733 A CN201410419733 A CN 201410419733A CN 105467231 A CN105467231 A CN 105467231A
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Abstract
The invention discloses a to-be-tested converter grid-connected test method and a to-be-tested converter grid-connected test device. The grid-connected test device comprises a bidirectional DC power supply and N converters; the N converters are parallelly connected and then parallelly connected with the bidirectional DC power supply; the AC side is connected onto the power grid, and the DC side is connected onto the DC side of the to-be-tested converter; and the AC side of the to-be-tested converter is connected with the power grid. The grid-connected test method comprises the following steps: the bidirectional DC power supply is controlled to start to enable the bidirectional DC power supply to provide power for the N converters and the to-be-tested converter; and according to the rated power of the bidirectional DC power supply and the rated power of the to-be-tested converter, the N converters and the to-be-tested converter are controlled to start correspondingly until the to-be-tested converter operates at the rated power. According to the grid-connected test method and the device, as the bidirectional DC power supply and the N converters are parallelly connected for combination use, the operation power of the to-be-tested converter is improved gradually to realize grid-connected test on the to-be-tested converter, the cost is greatly reduced, and hardware does not need to keep consistency.
Description
Technical field
The present invention relates to transverter technical field of measurement and test, particularly a kind of grid-connected method of testing of transverter to be measured and a kind of grid-connected proving installation of transverter to be measured.
Background technology
Along with the transverter/inverter applications of MW (megawatt) power grade is more and more extensive, the thing followed also requires increasing to the direct supply power grade that transverter/inverter carries out grid-connected test.Separate unit high-power DC power supply topological structure and multiple stage small power DC power sources in parallel topological structure is had in existing testing scheme, respectively as depicted in figs. 1 and 2, what adopt in Fig. 1 is the relatively high power direct supply that a power is not less than transverter/inverter to be measured, and after adopting multiple stage parallel connection in Fig. 2, power is added up and is not less than the smaller power direct supply of transverter/inverter to be measured.
But, when adopting the testing scheme of separate unit high-power DC power supply, need buy or make powerful direct supply, cycle is long, cost is high, and most powerful direct supply only possesses unidirectional charge function, do not possess reverse discharging function, use occasion is limited, easily cause the wasting of resources, cost performance is low; When adopting multiple stage small power DC power sources in parallel to be combined into the testing scheme of high-power DC power supply, if a whole set of proving installation of outsourcing, greatly can increase cost, if self manufacture requires high to the synchronous control technique of the hardware coherence of every platform small power DC power supply and software, easily cause that Making programme complex process, software development workload estimate are large, debugging cycle is long.
Summary of the invention
Object of the present invention is intended to solve one of above-mentioned technological deficiency at least to a certain extent.
For this reason, one object of the present invention is the grid-connected method of testing proposing a kind of transverter to be measured, combinationally use by a bidirectional DC power supply and N number of transverter are connected in parallel, improve the operate power of transverter to be measured gradually to realize the grid-connected test to transverter to be measured, not only can greatly reduce costs, and keep consistency without the need to hardware, convenient and swift, applying flexible.
For achieving the above object, the grid-connected method of testing of the transverter a kind of to be measured that one aspect of the present invention embodiment proposes, the grid-connected proving installation of described transverter to be measured comprises bidirectional DC power supply and N number of transverter, in parallel with described bidirectional DC power supply after described N number of transverter parallel connection, electrical network is connected to after the AC of each transverter in described N number of transverter is connected with the AC of described bidirectional DC power supply, the DC side of described transverter to be measured is connected to after the DC side of described each transverter is connected with the DC side of described bidirectional DC power supply, the AC of described transverter to be measured is connected with described electrical network, wherein, N be more than or equal to 2 integer, described grid-connected method of testing comprises the following steps: control described bidirectional DC power supply and start to make described bidirectional DC power supply be that described N number of transverter and described transverter to be measured are powered, described N number of transverter and the corresponding startup of described transverter to be measured is controlled, until described transverter to be measured is with the rated power operation of described transverter to be measured according to the rated power of described bidirectional DC power supply and the rated power of described transverter to be measured.
According to the grid-connected method of testing of the transverter to be measured of the embodiment of the present invention, the operate power of transverter to be measured is improved gradually to realize the grid-connected test to transverter to be measured by the mode of N number of transverter and bidirectional DC power supply parallel combination, reduce the demand to high-power DC power supply, reduce cost; And, can gather materials on the spot and directly use transverter, convenient and swift, provide cost savings, namely be used for making the transverter combinationally used to be easy to obtain, different capacity, the transverter of different hardware structure can use, even transverter to be tested can be used for combinationally use when volume production, hardware aspect is without the need to adding anything for the test structure of combination, and without the need to carrying out parallel connection debugging, greatly save time, reduce cost, improve production capacity; In addition applying flexible, can not cause resources idle to waste, combinationally use when namely needing, and can dismantle at any time in order to the use of other side, can reduce the investment to capital assets time unwanted.
For achieving the above object, the grid-connected proving installation of the transverter a kind of to be measured that the present invention's another aspect embodiment proposes, comprising: bidirectional DC power supply; N number of transverter, in parallel with described bidirectional DC power supply after described N number of transverter parallel connection, electrical network is connected to after the AC of each transverter in described N number of transverter is connected with the AC of described bidirectional DC power supply, the DC side of described transverter to be measured is connected to after the DC side of described each transverter is connected with the DC side of described bidirectional DC power supply, the AC of described transverter to be measured is connected with described electrical network, wherein, N be more than or equal to 2 integer; Control module, described control module starts for controlling described bidirectional DC power supply to make described bidirectional DC power supply be that described N number of transverter and described transverter to be measured are powered, and control described N number of transverter and the corresponding startup of described transverter to be measured, until described transverter to be measured is with the rated power operation of described transverter to be measured according to the rated power of described bidirectional DC power supply and the rated power of described transverter to be measured.
According to the grid-connected proving installation of the transverter to be measured of the embodiment of the present invention, by N number of transverter and bidirectional DC power supply parallel combination being made the operate power for improving transverter to be measured gradually to realize the grid-connected test to transverter to be measured, reduce the demand to high-power DC power supply, reduce cost; And, can gather materials on the spot and directly use transverter, convenient and swift, provide cost savings, namely be used for making the transverter combinationally used to be easy to obtain, different capacity, the transverter of different hardware structure can use, even transverter to be tested can be used for combinationally use when volume production, hardware aspect is without the need to adding any parts, and without the need to carrying out parallel connection debugging, greatly save time, reduce cost, improve production capacity; In addition applying flexible, can not cause resources idle to waste, combinationally use when namely needing, and can dismantle at any time in order to the use of other side, can reduce the investment to capital assets time unwanted.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the topology diagram adopting separate unit high-power DC power supply in existing testing scheme;
Fig. 2 is the topology diagram adopting multiple stage small power DC power sources in parallel in existing testing scheme;
Fig. 3 is the process flow diagram of the grid-connected method of testing of transverter to be measured according to the embodiment of the present invention;
Fig. 4 is the topology diagram of the grid-connected proving installation of transverter to be measured according to the embodiment of the present invention;
Fig. 5 is the schematic diagram that the first transverter charge operation, bidirectional DC power supply electric discharge according to an embodiment of the invention run;
Fig. 6 is the schematic diagram that the first transverter charge operation, bidirectional DC power supply charge operation and transverter to be measured electric discharge according to an embodiment of the invention runs;
Fig. 7 is the schematic diagram that the first transverter charge operation, the second transverter charge operation, bidirectional DC power supply electric discharge operation and transverter to be measured electric discharge according to an embodiment of the invention run;
Fig. 8 is the schematic diagram that the first transverter charge operation, the second transverter charge operation, bidirectional DC power supply charge operation and transverter to be measured electric discharge according to an embodiment of the invention runs;
Fig. 9 is the schematic diagram that the electric discharge of N number of according to an embodiment of the invention transverter charge operation, bidirectional DC power supply charge operation and transverter to be measured runs; And
Figure 10 is that the electric discharge of N number of in accordance with another embodiment of the present invention transverter runs, bidirectional DC power supply electric discharge runs and the schematic diagram of transverter charge operation to be measured.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
The grid-connected method of testing of transverter to be measured and the grid-connected proving installation of transverter to be measured that propose according to the embodiment of the present invention are described with reference to the accompanying drawings.
Fig. 3 is the process flow diagram of the grid-connected method of testing of transverter to be measured according to the embodiment of the present invention.Fig. 4 is the topology diagram of the grid-connected proving installation of transverter to be measured according to the embodiment of the present invention.Wherein, as shown in Figure 4, the grid-connected proving installation of this transverter to be measured comprises bidirectional DC power supply and N number of transverter, in parallel with described bidirectional DC power supply after described N number of transverter parallel connection, electrical network is connected to after the AC of the AC of each transverter in described N number of transverter and AC side and described bidirectional DC power supply and AC side are connected, the DC side of described transverter to be measured is connected to after the DC side of the DC side of described each transverter and DC side and described bidirectional DC power supply and DC side are connected, the AC of described transverter to be measured is connected with described electrical network, wherein, N be more than or equal to 2 integer.As shown in Figure 3, the grid-connected method of testing of the transverter to be measured of the embodiment of the present invention comprises the following steps:
S1, controls bidirectional DC power supply and starts to make bidirectional DC power supply be that N number of transverter and transverter to be measured are powered.
That is, first control bidirectional DC power supply and start, making it export can provide the DC voltage of N number of transverter and transverter work to be measured.Wherein, the power grade of N number of transverter can be identical, also can be different.
S2, controls the startup corresponding to transverter to be measured of N number of transverter, until transverter to be measured is with the rated power operation of transverter to be measured according to the rated power of bidirectional DC power supply and the rated power of transverter to be measured.
In an embodiment of the present invention, described transverter to be measured comprises described transverter to be measured with the rated power of described transverter to be measured electric discharge operation and charge operation with the rated power operation of described transverter to be measured.Wherein, it should be noted that, charge operation refers to that energy is changed from AC to DC side, and electric discharge operation refers to that energy is changed from DC side to AC.
According to one embodiment of present invention, control described N number of transverter and the corresponding startup of described transverter to be measured according to the rated power of described bidirectional DC power supply and the rated power of described transverter to be measured, specifically comprise following flow process:
S11, the first transverter controlled in described N number of transverter starts, and control described first transverter with the first power such as bKW charge operation, wherein, described bidirectional DC power supply electric discharge runs, and its electric discharge operate power is aKW, and the rated power of described bidirectional DC power supply is more than or equal to described first power, specifically as shown in Figure 5, now Ia=Ib.
S12, control described transverter to be measured to start, and control described transverter to be measured and discharge with the charge operation power sum of described first power and described bidirectional DC power supply i.e. (a+b) KW and run, wherein, described bidirectional DC power supply switches to charge operation by electric discharge operation automatically, its charge operation power is aKW, specifically as shown in Figure 6, and now I=Ia+Ib.
S13, the second transverter controlled in described N number of transverter starts, and controls described second transverter with the second power such as cKW charge operation, wherein, described bidirectional DC power supply switches to electric discharge to run by charge operation automatically, specifically as shown in Figure 7, and now I=Ib+Ic-Ia.
S14, the electric discharge operate power controlling described transverter to be measured is increased to charge operation power sum i.e. (a+b+c) KW of described first power, described second power and described bidirectional DC power supply, wherein, described bidirectional DC power supply switches to charge operation by electric discharge operation automatically, specifically as shown in Figure 8, now I=Ia+Ib+Ic.
In the present embodiment, the transverter controlling not start in described N number of transverter is according to step S13 and S14 successively startup optimization, until the electric discharge operate power of described transverter to be measured reaches the rated power of described transverter to be measured.That is, as shown in Figure 9, the electric discharge operate power of transverter to be measured is increased to (a+b+c+ the most at last ... + n) KW, realize transverter to be measured and run according to the electric discharge of its rated power, now I=Ia+Ib+Ic+ ... + In.
Therefore, the electric discharge that the grid-connected method of testing of the transverter to be measured of the embodiment of the present invention can realize transverter to be measured and power current inverter runs grid-connected test.
According to another embodiment of the invention, control described N number of transverter and the corresponding startup of described transverter to be measured according to the rated power of described bidirectional DC power supply and the rated power of described transverter to be measured, specifically comprise following flow process:
S21, the first transverter controlled in described N number of transverter starts, and controls described first transverter and run with the first power discharge, wherein, described bidirectional DC power supply charge operation, and the rated power of described bidirectional DC power supply is more than or equal to described first power.
S22, controls described transverter to be measured and starts, and controls described transverter to be measured with the electric discharge operate power sum charge operation of described first power with described bidirectional DC power supply, and wherein, described bidirectional DC power supply switches to electric discharge operation by charge operation automatically.
S23, the second transverter controlled in described N number of transverter starts, and controls described second transverter and runs with the second power discharge, and wherein, described bidirectional DC power supply switches to charge operation by operation of discharging automatically.
S24, the charge operation power controlling described transverter to be measured is increased to the electric discharge operate power sum of described first power, described second power and described bidirectional DC power supply, and wherein, described bidirectional DC power supply switches to electric discharge to run by charge operation automatically.
Wherein, the transverter controlling not start in described N number of transverter is according to step S23 and S24 successively startup optimization, until the charge operation power of described transverter to be measured reaches the rated power of described transverter to be measured.That is, as shown in Figure 10, the charge operation power of transverter to be measured is increased to (a+b+c+ the most at last ... + n) KW, realize transverter to be measured according to its rated power charge operation, now I=Ia+Ib+Ic+ ... + In.
Therefore, the grid-connected method of testing of the transverter to be measured of the embodiment of the present invention can realize the grid-connected test of charge operation of transverter to be measured and power current inverter.
In an embodiment of the present invention, the power grade of described N number of transverter is selected arbitrarily according to the power grade of described transverter to be measured.Therefore, the transverter that the grid-connected method of testing of the transverter to be measured of the embodiment of the present invention uses is easy to obtain, and can gather materials on the spot, applying flexible, can not cause resources idle to waste.
In sum, a bidirectional DC power supply and N number of transverter can be connected in parallel and combinationally use by the grid-connected method of testing of the transverter to be measured of the embodiment of the present invention, the power grade of N number of transverter can be selected arbitrarily according to the power grade of transverter to be measured, and keep consistency without the need to hardware, do not need to carry out parallel connection debugging simultaneously, can directly use.Further, be not the DC source of special debugging in parallel by the be connected in parallel DC source that is combined into of a bidirectional DC power supply and N number of transverter, after completing high-power transverter debugging test to be measured, combo architectures directly can be dismantled and separately be used it for anything else, flexibly and easily.
According to the grid-connected method of testing of the transverter to be measured of the embodiment of the present invention, the operate power of transverter to be measured is improved gradually to realize the grid-connected test to transverter to be measured by the mode of N number of transverter and bidirectional DC power supply parallel combination, reduce the demand to high-power DC power supply, reduce cost; And, can gather materials on the spot and directly use transverter, convenient and swift, provide cost savings, namely be used for making the transverter combinationally used to be easy to obtain, different capacity, the transverter of different hardware structure can use, even transverter to be tested can be used for combinationally use when volume production, hardware aspect is without the need to adding anything for the test structure of combination, and without the need to carrying out parallel connection debugging, greatly save time, reduce cost, improve production capacity; In addition applying flexible, can not cause resources idle to waste, combinationally use when namely needing, and can dismantle at any time in order to the use of other side, can reduce the investment to capital assets time unwanted.
As shown in Figure 4, the grid-connected proving installation of the transverter to be measured of the embodiment of the present invention comprises: bidirectional DC power supply 101 and N number of transverter 201,202 ..., 20N and control module (not shown).
Wherein, N number of transverter 201,202 ..., in parallel with bidirectional DC power supply 101 after 20N parallel connection, N number of transverter 201,202 ..., the AC of the AC of each transverter in 20N and AC side and bidirectional DC power supply 101 and AC side be connected to electrical network 10 after being connected, the DC side of transverter 20 to be measured is connected to after the DC side of each transverter and DC side are connected with the DC side of bidirectional DC power supply 101, the AC of transverter 20 to be measured is connected with described electrical network, wherein, N be more than or equal to 2 integer.Described control module starts for controlling described bidirectional DC power supply to make described bidirectional DC power supply be that described N number of transverter and described transverter to be measured are powered, and control described N number of transverter and the corresponding startup of described transverter to be measured, until described transverter to be measured is with the rated power operation of described transverter to be measured according to the rated power of described bidirectional DC power supply and the rated power of described transverter to be measured.
In an embodiment of the present invention, described transverter to be measured comprises described transverter to be measured with the rated power of described transverter to be measured electric discharge operation and charge operation with the rated power operation of described transverter to be measured.Wherein, it should be noted that, charge operation refers to that energy is changed from AC to DC side, and electric discharge operation refers to that energy is changed from DC side to AC.
According to one embodiment of present invention, as shown in Figures 5 to 9, when described control module controls the startup corresponding to described transverter to be measured of described N number of transverter according to the rated power of the rated power of described bidirectional DC power supply and described transverter to be measured, described control module controls N number of transverter 201, 202, the such as transverter 201 of the first transverter in 20N starts, and control the first transverter such as transverter 201 with the first power such as bKW charge operation, wherein, bidirectional DC power supply 101 discharges and runs, its electric discharge operate power is aKW, and the rated power of described bidirectional DC power supply is more than or equal to described first power, specifically as shown in Figure 5, now Ia=Ib.Described control module also controls transverter 20 to be measured and starts, and control transverter 20 to be measured and discharge with the charge operation power sum of described first power and described bidirectional DC power supply i.e. (a+b) KW and run, wherein, bidirectional DC power supply 101 switches to charge operation by electric discharge operation automatically, its charge operation power is aKW, specifically as shown in Figure 6, now I=Ia+Ib.Described control module also control N number of transverter 201,202 ..., the second transverter such as transverter 202 in 20N starts, and control the second transverter such as transverter 202 with the second power such as cKW charge operation, wherein, bidirectional DC power supply 101 switches to electric discharge to run by charge operation automatically, specifically as shown in Figure 7, now I=Ib+Ic-Ia.The electric discharge operate power that described control module also controls transverter 20 to be measured is increased to charge operation power sum i.e. (a+b+c) KW of described first power, described second power and described bidirectional DC power supply, wherein, bidirectional DC power supply 101 switches to charge operation by electric discharge operation automatically, specifically as shown in Figure 8, now I=Ia+Ib+Ic.Wherein, described control module also control described N number of transverter 201,202 ..., the transverter startup optimization successively that do not start in 20N, until the electric discharge operate power of transverter 20 to be measured reaches the rated power of described transverter to be measured, namely say, as shown in Figure 9, the electric discharge operate power of transverter 20 to be measured is increased to (a+b+c+ the most at last ... + n) KW, realize transverter 20 to be measured and run according to the electric discharge of its rated power, now I=Ia+Ib+Ic+ ... + In.
According to another embodiment of the invention, when described control module controls the startup corresponding to described transverter to be measured of described N number of transverter according to the rated power of the rated power of described bidirectional DC power supply and described transverter to be measured, the first transverter that described control module controls in described N number of transverter starts, and control described first transverter and run with the first power discharge, wherein, described bidirectional DC power supply charge operation, and the rated power of described bidirectional DC power supply is more than or equal to described first power; Described control module also controls described transverter to be measured and starts, and control described transverter to be measured with the electric discharge operate power sum charge operation of described first power and described bidirectional DC power supply, wherein, described bidirectional DC power supply switches to electric discharge to run by charge operation automatically; The second transverter that described control module also controls in described N number of transverter starts, and controls described second transverter and runs with the second power discharge, and wherein, described bidirectional DC power supply switches to charge operation by operation of discharging automatically; The charge operation power that described control module also controls described transverter to be measured is increased to the electric discharge operate power sum of described first power, described second power and described bidirectional DC power supply, wherein, described bidirectional DC power supply switches to electric discharge to run by charge operation automatically; Wherein, described control module controls the transverter startup optimization successively do not started in described N number of transverter, until the charge operation power of described transverter to be measured reaches the rated power of described transverter to be measured.Finally, as shown in Figure 10, the charge operation power of transverter to be measured is increased to (a+b+c+ ... + n) KW, realize transverter to be measured according to its rated power charge operation, now I=Ia+Ib+Ic+ ... + In.
In an embodiment of the present invention, the power grade of described N number of transverter is selected arbitrarily according to the power grade of described transverter to be measured.
According to the grid-connected proving installation of the transverter to be measured of the embodiment of the present invention, by N number of transverter and bidirectional DC power supply parallel combination being made the operate power for improving transverter to be measured gradually to realize the grid-connected test to transverter to be measured, reduce the demand to high-power DC power supply, reduce cost; And, can gather materials on the spot and directly use transverter, convenient and swift, provide cost savings, namely be used for making the transverter combinationally used to be easy to obtain, different capacity, the transverter of different hardware structure can use, even transverter to be tested can be used for combinationally use when volume production, hardware aspect is without the need to adding any parts, and without the need to carrying out parallel connection debugging, greatly save time, reduce cost, improve production capacity; In addition applying flexible, can not cause resources idle to waste, combinationally use when namely needing, and can dismantle at any time in order to the use of other side, can reduce the investment to capital assets time unwanted.
Describe and can be understood in process flow diagram or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
In flow charts represent or in this logic otherwise described and/or step, such as, the sequencing list of the executable instruction for realizing logic function can be considered to, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise the system of processor or other can from instruction execution system, device or equipment instruction fetch and perform the system of instruction) use, or to use in conjunction with these instruction execution systems, device or equipment.With regard to this instructions, " computer-readable medium " can be anyly can to comprise, store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), ROM (read-only memory) (ROM), erasablely edit ROM (read-only memory) (EPROM or flash memory), fiber device, and portable optic disk ROM (read-only memory) (CDROM).In addition, computer-readable medium can be even paper or other suitable media that can print described program thereon, because can such as by carrying out optical scanning to paper or other media, then carry out editing, decipher or carry out process with other suitable methods if desired and electronically obtain described program, be then stored in computer memory.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be ROM (read-only memory), disk or CD etc.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.
Claims (10)
1. the grid-connected method of testing of a transverter to be measured, it is characterized in that, the grid-connected proving installation of described transverter to be measured comprises bidirectional DC power supply and N number of transverter, in parallel with described bidirectional DC power supply after described N number of transverter parallel connection, electrical network is connected to after the AC of each transverter in described N number of transverter is connected with the AC of described bidirectional DC power supply, the DC side of described transverter to be measured is connected to after the DC side of described each transverter is connected with the DC side of described bidirectional DC power supply, the AC of described transverter to be measured is connected with described electrical network, wherein, N be more than or equal to 2 integer, described grid-connected method of testing comprises the following steps:
Control described bidirectional DC power supply to start to make described bidirectional DC power supply be that described N number of transverter and described transverter to be measured are powered;
Described N number of transverter and the corresponding startup of described transverter to be measured is controlled, until described transverter to be measured is with the rated power operation of described transverter to be measured according to the rated power of described bidirectional DC power supply and the rated power of described transverter to be measured.
2. the grid-connected method of testing of transverter to be measured as claimed in claim 1, it is characterized in that, described transverter to be measured comprises described transverter to be measured with the rated power operation of described transverter to be measured and runs and charge operation with the electric discharge of the rated power of described transverter to be measured.
3. the grid-connected method of testing of transverter to be measured as claimed in claim 2, it is characterized in that, control described N number of transverter and the corresponding startup of described transverter to be measured according to the rated power of described bidirectional DC power supply and the rated power of described transverter to be measured, specifically comprise:
S11, the first transverter controlled in described N number of transverter starts, and controls described first transverter with the first power charge operation, and wherein, described bidirectional DC power supply electric discharge runs, and the rated power of described bidirectional DC power supply is more than or equal to described first power;
S12, controls described transverter to be measured and starts, and controls described transverter to be measured and to discharge with the charge operation power sum of described bidirectional DC power supply with described first power and run, and wherein, described bidirectional DC power supply switches to charge operation by operation of discharging automatically;
S13, the second transverter controlled in described N number of transverter starts, and controls described second transverter with the second power charge operation, and wherein, described bidirectional DC power supply switches to electric discharge to run by charge operation automatically;
S14, the electric discharge operate power controlling described transverter to be measured is increased to the charge operation power sum of described first power, described second power and described bidirectional DC power supply, and wherein, described bidirectional DC power supply switches to charge operation by electric discharge operation automatically;
Wherein, the transverter controlling not start in described N number of transverter is according to step S13 and S14 successively startup optimization, until the electric discharge operate power of described transverter to be measured reaches the rated power of described transverter to be measured.
4. the grid-connected method of testing of transverter to be measured as claimed in claim 2, it is characterized in that, control described N number of transverter and the corresponding startup of described transverter to be measured according to the rated power of described bidirectional DC power supply and the rated power of described transverter to be measured, specifically comprise:
S21, the first transverter controlled in described N number of transverter starts, and controls described first transverter and run with the first power discharge, wherein, described bidirectional DC power supply charge operation, and the rated power of described bidirectional DC power supply is more than or equal to described first power;
S22, controls described transverter to be measured and starts, and controls described transverter to be measured with the electric discharge operate power sum charge operation of described first power with described bidirectional DC power supply, and wherein, described bidirectional DC power supply switches to electric discharge operation by charge operation automatically;
S23, the second transverter controlled in described N number of transverter starts, and controls described second transverter and runs with the second power discharge, and wherein, described bidirectional DC power supply switches to charge operation by operation of discharging automatically;
S24, the charge operation power controlling described transverter to be measured is increased to the electric discharge operate power sum of described first power, described second power and described bidirectional DC power supply, and wherein, described bidirectional DC power supply switches to electric discharge to run by charge operation automatically;
Wherein, the transverter controlling not start in described N number of transverter is according to step S23 and S24 successively startup optimization, until the charge operation power of described transverter to be measured reaches the rated power of described transverter to be measured.
5. the grid-connected method of testing of the transverter to be measured according to any one of claim 1-4, is characterized in that, the power grade of described N number of transverter is selected arbitrarily according to the power grade of described transverter to be measured.
6. a grid-connected proving installation for transverter to be measured, is characterized in that, comprising:
Bidirectional DC power supply;
N number of transverter, in parallel with described bidirectional DC power supply after described N number of transverter parallel connection, electrical network is connected to after the AC of each transverter in described N number of transverter is connected with the AC of described bidirectional DC power supply, the DC side of described transverter to be measured is connected to after the DC side of described each transverter is connected with the DC side of described bidirectional DC power supply, the AC of described transverter to be measured is connected with described electrical network, wherein, N be more than or equal to 2 integer;
Control module, described control module starts for controlling described bidirectional DC power supply to make described bidirectional DC power supply be that described N number of transverter and described transverter to be measured are powered, and control described N number of transverter and the corresponding startup of described transverter to be measured, until described transverter to be measured is with the rated power operation of described transverter to be measured according to the rated power of described bidirectional DC power supply and the rated power of described transverter to be measured.
7. the grid-connected proving installation of transverter to be measured as claimed in claim 6, it is characterized in that, described transverter to be measured comprises described transverter to be measured with the rated power operation of described transverter to be measured and runs and charge operation with the electric discharge of the rated power of described transverter to be measured.
8. the grid-connected proving installation of transverter to be measured as claimed in claim 7, it is characterized in that, when described control module controls the startup corresponding to described transverter to be measured of described N number of transverter according to the rated power of the rated power of described bidirectional DC power supply and described transverter to be measured
The first transverter that described control module controls in described N number of transverter starts, and control described first transverter with the first power charge operation, wherein, described bidirectional DC power supply electric discharge runs, and the rated power of described bidirectional DC power supply is more than or equal to described first power;
Described control module also controls described transverter to be measured and starts, and control described transverter to be measured and discharge with the charge operation power sum of described first power and described bidirectional DC power supply and run, wherein, described bidirectional DC power supply switches to charge operation by electric discharge operation automatically;
The second transverter that described control module also controls in described N number of transverter starts, and controls described second transverter with the second power charge operation, and wherein, described bidirectional DC power supply switches to electric discharge to run by charge operation automatically;
The electric discharge operate power that described control module also controls described transverter to be measured is increased to the charge operation power sum of described first power, described second power and described bidirectional DC power supply, wherein, described bidirectional DC power supply switches to charge operation by electric discharge operation automatically;
Wherein, described control module also controls the transverter startup optimization successively do not started in described N number of transverter, until the electric discharge operate power of described transverter to be measured reaches the rated power of described transverter to be measured.
9. the grid-connected proving installation of transverter to be measured as claimed in claim 7, it is characterized in that, when described control module controls the startup corresponding to described transverter to be measured of described N number of transverter according to the rated power of the rated power of described bidirectional DC power supply and described transverter to be measured
The first transverter that described control module controls in described N number of transverter starts, and control described first transverter and run with the first power discharge, wherein, described bidirectional DC power supply charge operation, and the rated power of described bidirectional DC power supply is more than or equal to described first power;
Described control module also controls described transverter to be measured and starts, and control described transverter to be measured with the electric discharge operate power sum charge operation of described first power and described bidirectional DC power supply, wherein, described bidirectional DC power supply switches to electric discharge to run by charge operation automatically;
The second transverter that described control module also controls in described N number of transverter starts, and controls described second transverter and runs with the second power discharge, and wherein, described bidirectional DC power supply switches to charge operation by operation of discharging automatically;
The charge operation power that described control module also controls described transverter to be measured is increased to the electric discharge operate power sum of described first power, described second power and described bidirectional DC power supply, wherein, described bidirectional DC power supply switches to electric discharge to run by charge operation automatically;
Wherein, described control module controls the transverter startup optimization successively do not started in described N number of transverter, until the charge operation power of described transverter to be measured reaches the rated power of described transverter to be measured.
10. the grid-connected proving installation of the transverter to be measured according to any one of claim 6-9, is characterized in that, the power grade of described N number of transverter is selected arbitrarily according to the power grade of described transverter to be measured.
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Application publication date: 20160406 Assignee: BYD AUTOMOBILE INDUSTRY CO., LTD. Assignor: Biyadi Co., Ltd. Contract record no.: 2017440020069 Denomination of invention: To-be-tested converter grid-connected test method and to-be-tested converter grid-connected test device License type: Common License Record date: 20170828 |
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